Catch end-of-string in the source string when performing a range match#116
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Catch end-of-string in the source string when performing a range match#116
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@borkovic I think this fixes the out-of-bounds access in |
borkovic
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May 18, 2025
match.c
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| p += r, m += r, s++; | ||
| continue; | ||
| } | ||
| break; |
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Should break; (line 36) be outside if (*s) {...} (lines 30-37)?
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Aha. Good catch. Now, I wonder if I can add a test to trip.rc to catch this misuse of the C switch statement.
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As far as as I can tell the accidental fall through would consume some of the pattern string, though it's hard in this moment to provoke it into doing something bad. Nevertheless, I fixed the break statement.
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This commit guards the case for range matches (e.g., "[a-z]") with an end-of-string check for the source string. This prevents an inadvertent interpretation of the nul terminator as a matching character, as well as preventing bugs as in issue #115.
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Sorry for me being inactive for so long. Can we merge this, @rakitzis? |
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Yes, of course. |
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This commit guards the case for range matches (e.g., "[a-z]") with an end-of-string check for the source string.
This prevents an inadvertent interpretation of the nul terminator as a matching character, as well as preventing bugs as in issue #115.